我怎样才能在swift 4中获得deviceToken？

5 回答

• 1

  假设您已经检查过所有内容都已设置正确，基于您的代码，它似乎应该可以正常工作，您所要做的就是将格式更改为 %02.2hhx 而不是 %02X 以获取相应的十六进制字符串 . 因此，你应该得到一个有效的 .

  作为一种好的做法，您可以将data extension添加到项目中以获取字符串：

  import Foundation
  
  extension Data {
      var hexString: String {
          let hexString = map { String(format: "%02.2hhx", $0) }.joined()
          return hexString
      }
  }
  

  用法：

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
      let deviceTokenString = deviceToken.hexString
      print(deviceTokenString)
  }
  

  回复于 2024-05-03T08:39:59+08:00
• 0

  Working Code for getting deviceToken in - iOS 11 or greater, Swift 4

  Request user permission

  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
  
      let notificationTypes: UIUserNotificationType = [UIUserNotificationType.alert,UIUserNotificationType.badge, UIUserNotificationType.sound]
      let pushNotificationSettings = UIUserNotificationSettings(types: notificationTypes, categories: nil)
  
      application.registerUserNotificationSettings(pushNotificationSettings)
      application.registerForRemoteNotifications()
  
      return true        
  }
  

  Getting device token

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
  
      let token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
      print(token) 
  }
  

  In case of error

  func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
  
      print("i am not available in simulator \(error)")
  }
  

  回复于 2024-05-03T08:39:59+08:00
• 0

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)
      {
          let tokenChars = (deviceToken as NSData).bytes.bindMemory(to: CChar.self, capacity: deviceToken.count)
          var tokenString = ""
  
          for i in 0..<deviceToken.count {
              tokenString += String(format: "%02.2hhx", arguments: [tokenChars[i]])
          }
                      print("tokenString: \(tokenString)")
  }
  

  回复于 2024-05-03T08:39:59+08:00
• 4

  获取设备令牌

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
          // Convert token to string
          let deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
  }
  

  希望对你有帮助

  回复于 2024-05-03T08:39:59+08:00
• 0

  您可以像这样获取设备令牌：

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
      let token = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
      print("Device Token : ",token)
  }
  

  回复于 2024-05-03T08:39:59+08:00